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ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS

Yıl 2025, Cilt: 13 Sayı: 1, 24 - 34, 28.02.2025

Öz

This work presents a theorem that any Lipschitz function is weakly subdifferentiable with x^* component of the weak subgradient is different from 0_(R^n ). This theorem is based on Kasimbeyli's nonlinear cone separation theorem. Also, we show that any positively homogeneous and continuous function is both upper and lower Lipschitz. Additionally, we show that positively homogeneous and lower semicontinuous functions are weakly subdifferentiable that the pair (x^*,c) which is a weak subgradient of a function in this case is different from (0_(R^n ),0).

Kaynakça

  • [1] Azimov AY, Gasimov RN. On weak conjugacy, weak subdifferentials and duality with zero gap in nonconvex optimization, International Journal of Applied Mathematics, 1, 1999, pp. 171–192.
  • [2] Azimov AY, Gasimov RN. Stability and duality of nonconvex problemsvia augmented lagrangian, Cybernatics and System Analysis, 3(3), 2002, pp. 412–421.
  • [3] Bila S, Kasimbeyli R. On the some sum rule for the weak subdifferential and some properties of augmented normal cones, Journal of Nonlinear and Convex Analysis, 24(10), 2023, pp. 2239–2257.
  • [4] Borwein JM, Lewis AS. Convex Analysis and Nonlinear Optimization, CMS Books in Mathematics, Springer Science+Business Media, Inc., New York, 2006.
  • [5] Dinc Yalcin G, Kasimbeyli R. Weak subgradient method for solving non-smooth nonconvex optimization problems, Optimization, 70(7), 2021, pp. 1513-1553.
  • [6] Gasimov RN. Duality in nonconvex optimization, Ph.D. Dissertation, Department of Operations Research and Mathematical Modeling, Baku State University, Baku, 1992.
  • [7] Gasimov RN. Augmented Lagrangian duality and nondifferentiable optimization methods in nonconvex programming, J. Global Optimization, 24, 2002, pp. 187–203.
  • [8] Kasimbeyli R, Mammadov M. Optimality conditions in nonconvex opti-mization via weak subdifferentials, Nonlinear Analysis: Theory, Methods and Applications, 74, 2011, pp. 2534–2547.
  • [9] Kasimbeyli R, Mammadov M. On weak subdifferentials, directional derivatives, and radial epiderivatives for nonconvex functions, SIAM J. on Optimization, 20, 2009, pp. 841–855
  • [10] Kasimbeyli R. A nonlinear cone separation theorem and scalarization in nonconvex vector optimization, SIAM J. on Optimization, 20, 2010, pp. 1591–1619.
  • [11] Kasimbeyli R, Karimi M. Separation theorems for nonconvex sets and application in optimization, Operations Research Letters, 47, 2019, pp. 569–573.
  • [12] Rockafellar RT. Convex analysis, Princeton University Press, Princeton, 1970.
  • [13] Rockafellar RT, Wets R. J-B. Variational analysis, Springer-Verlag Berlin Heidelberg, 2009.

ON SOME CLASSES OF WEAKLY SUBDIFFERENTIABLE FUNCTIONS

Yıl 2025, Cilt: 13 Sayı: 1, 24 - 34, 28.02.2025

Öz

This work presents a theorem that any Lipschitz function is weakly subdifferentiable with x^* component of the weak subgradient is different from 0_(R^n ). This theorem is based on Kasimbeyli's nonlinear cone separation theorem. Also, we show that any positively homogeneous and continuous function is both upper and lower Lipschitz. Additionally, we show that positively homogeneous and lower semicontinuous functions are weakly subdifferentiable that the pair (x^*,c) which is a weak subgradient of a function in this case is different from (0_(R^n ),0).

Kaynakça

  • [1] Azimov AY, Gasimov RN. On weak conjugacy, weak subdifferentials and duality with zero gap in nonconvex optimization, International Journal of Applied Mathematics, 1, 1999, pp. 171–192.
  • [2] Azimov AY, Gasimov RN. Stability and duality of nonconvex problemsvia augmented lagrangian, Cybernatics and System Analysis, 3(3), 2002, pp. 412–421.
  • [3] Bila S, Kasimbeyli R. On the some sum rule for the weak subdifferential and some properties of augmented normal cones, Journal of Nonlinear and Convex Analysis, 24(10), 2023, pp. 2239–2257.
  • [4] Borwein JM, Lewis AS. Convex Analysis and Nonlinear Optimization, CMS Books in Mathematics, Springer Science+Business Media, Inc., New York, 2006.
  • [5] Dinc Yalcin G, Kasimbeyli R. Weak subgradient method for solving non-smooth nonconvex optimization problems, Optimization, 70(7), 2021, pp. 1513-1553.
  • [6] Gasimov RN. Duality in nonconvex optimization, Ph.D. Dissertation, Department of Operations Research and Mathematical Modeling, Baku State University, Baku, 1992.
  • [7] Gasimov RN. Augmented Lagrangian duality and nondifferentiable optimization methods in nonconvex programming, J. Global Optimization, 24, 2002, pp. 187–203.
  • [8] Kasimbeyli R, Mammadov M. Optimality conditions in nonconvex opti-mization via weak subdifferentials, Nonlinear Analysis: Theory, Methods and Applications, 74, 2011, pp. 2534–2547.
  • [9] Kasimbeyli R, Mammadov M. On weak subdifferentials, directional derivatives, and radial epiderivatives for nonconvex functions, SIAM J. on Optimization, 20, 2009, pp. 841–855
  • [10] Kasimbeyli R. A nonlinear cone separation theorem and scalarization in nonconvex vector optimization, SIAM J. on Optimization, 20, 2010, pp. 1591–1619.
  • [11] Kasimbeyli R, Karimi M. Separation theorems for nonconvex sets and application in optimization, Operations Research Letters, 47, 2019, pp. 569–573.
  • [12] Rockafellar RT. Convex analysis, Princeton University Press, Princeton, 1970.
  • [13] Rockafellar RT, Wets R. J-B. Variational analysis, Springer-Verlag Berlin Heidelberg, 2009.
Toplam 13 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Yöneylem
Bölüm Makaleler
Yazarlar

Samet Bila 0000-0002-5228-643X

Refail Kasımbeyli 0000-0002-7339-9409

Yayımlanma Tarihi 28 Şubat 2025
Gönderilme Tarihi 3 Şubat 2025
Kabul Tarihi 19 Şubat 2025
Yayımlandığı Sayı Yıl 2025 Cilt: 13 Sayı: 1

Kaynak Göster

APA Bila, S., & Kasımbeyli, R. (2025). ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS. Eskişehir Teknik Üniversitesi Bilim Ve Teknoloji Dergisi B - Teorik Bilimler, 13(1), 24-34.
AMA Bila S, Kasımbeyli R. ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS. Estuscience - Theory. Şubat 2025;13(1):24-34.
Chicago Bila, Samet, ve Refail Kasımbeyli. “ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS”. Eskişehir Teknik Üniversitesi Bilim Ve Teknoloji Dergisi B - Teorik Bilimler 13, sy. 1 (Şubat 2025): 24-34.
EndNote Bila S, Kasımbeyli R (01 Şubat 2025) ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS. Eskişehir Teknik Üniversitesi Bilim ve Teknoloji Dergisi B - Teorik Bilimler 13 1 24–34.
IEEE S. Bila ve R. Kasımbeyli, “ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS”, Estuscience - Theory, c. 13, sy. 1, ss. 24–34, 2025.
ISNAD Bila, Samet - Kasımbeyli, Refail. “ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS”. Eskişehir Teknik Üniversitesi Bilim ve Teknoloji Dergisi B - Teorik Bilimler 13/1 (Şubat 2025), 24-34.
JAMA Bila S, Kasımbeyli R. ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS. Estuscience - Theory. 2025;13:24–34.
MLA Bila, Samet ve Refail Kasımbeyli. “ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS”. Eskişehir Teknik Üniversitesi Bilim Ve Teknoloji Dergisi B - Teorik Bilimler, c. 13, sy. 1, 2025, ss. 24-34.
Vancouver Bila S, Kasımbeyli R. ON SOME CLASSES OF THE WEAKLY SUBDIFFERENTIAL FUNCTIONS. Estuscience - Theory. 2025;13(1):24-3.